I'm looking into buying at least a 200Gig hard drive. I've got 3 Western digital drives, a 60gig 7200RPM, 80gig 7200RPM SE, and 120gig 7200RPM SE. My problem is that they are louder than my new watercooling, and I'm looking to make my system as silent as possible. Are there any hard drives that will be quieter than these western digitals? Thanks !